I like fruit in salads, either an apple or a nectarine. Or raw grated beetroot. A light dressing that adds sweetness is a simple squeeze of juice from an orange. The other thing that makes a fantastic change, unbelievably good when you consider how simple it is, is to very finely dice the salad ingrediants. My mother taught me that. That way it is almost like a relish, you get more flavours in each fork full and it tastes more "dressy" than salad. I am always stiving to make salad more interesting with out adding fatty ingrediants or high calorie ingrediants, cheese is out for me